目 录
中文摘要...................................................................................................III
Abstract ..................................................................................................IV
1 绪论 .........................................................................................................1
1.1 概述 ......................................................................................................1
1.2 火灾报警器的发展趋势 ..............................................................................1
1.3 火灾报警器的现状及特点 ...........................................................................1
2 烟雾检测报警器的方案设计 .................................................................2
2.1 烟雾检测报警器设计思路 ...........................................................................2
2.2 烟雾传感器的选型 ....................................................................................2
2.2.1 烟雾传感器介绍...................................................................................2
2.2.2 烟雾传感器的选定................................................................................5
2.2.3 MQ-2 型烟雾传感器的工作原理 ..............................................................6
2.2.4 MQ-2 型烟雾传感器的特性及性能指标 .....................................................7
3 烟雾检测报警器的整体设计方案 .........................................................9
3.1 烟雾检测报警器原理图 ..............................................................................9
3.2 单片机的选型...........................................................................................9
3.2.1 STC89C52RC 单片机的结构..........................................................................................9
3.3 ADC0832 模数转换电路 ............................................................................12
3.3.1 ADC0832 功能特点 .............................................................................12
3.3.2 ADC0832 外部引脚及说明 ....................................................................13
3.3.3 单片机对 ADC0832 的控制原理 ............................................................13
3.3.4 ADC0832 典型应用 .............................................................................14
3.4 声音报警器电路......................................................................................15
3.5 状态指示灯及控制键电路 .........................................................................15
4 烟雾检测报警器的软件设计................................................................16
4.1 AT89S52 单片机调试及开发工具.................................................................16
4.2 烟雾检测报警器软件流程及设计 ................................................................16
4.2.1 主程序设计及流程图 ..........................................................................17
5 结论........................................................................................................17
参考文献...................................................................................................19
致谢...........................................................................................................20
